445145 has 8 divisors (see below), whose sum is σ = 565704. Its totient is φ = 335104.

The previous prime is 445141. The next prime is 445157. The reversal of 445145 is 541544.

It can be written as a sum of positive squares in 4 ways, for example, as 170569 + 274576 = 413^2 + 524^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 445145 - 2² = 445141 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 445145.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2534 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (70713).

2⁴⁴⁵¹⁴⁵ is an apocalyptic number.

It is an amenable number.

445145 is a deficient number, since it is larger than the sum of its proper divisors (120559).

445145 is a wasteful number, since it uses less digits than its factorization.

445145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5259.

The product of its digits is 1600, while the sum is 23.

The square root of 445145 is about 667.1918764493. The cubic root of 445145 is about 76.3543585839.

Adding to 445145 its reverse (541544), we get a palindrome (986689).

The spelling of 445145 in words is "four hundred forty-five thousand, one hundred forty-five".